diff --git a/tb/sw/src/halfLvdsMacSvr.c b/tb/sw/src/halfLvdsMacSvr.c
index fabca28..a5a2ccc 100644
--- a/tb/sw/src/halfLvdsMacSvr.c
+++ b/tb/sw/src/halfLvdsMacSvr.c
@@ -77,7 +77,7 @@ uint32_t HLM_poll(uint32_t mode)
 {
 	if (mode == WORKMODE_MASTER)
 	{
-		uint32_t tx_pkt_len = 128;
+		uint32_t tx_pkt_len = 256;
 		uint32_t rx_pkt_len = 0;
 		uint32_t rx_start = 0;
 		uint32_t status;
@@ -94,7 +94,7 @@ uint32_t HLM_poll(uint32_t mode)
 		
         //开始发送工作
         *tx0_txLen = tx_pkt_len + 4;
-		*tx0_txFifo = (tx_pkt_len << 20) | (0 << 16) | 0;
+		*tx0_txFifo = (tx_pkt_len << 20) | 0;
 		
 		uint32_t tx_index = 0;
 		uint32_t rx_index = 0;
@@ -120,6 +120,14 @@ uint32_t HLM_poll(uint32_t mode)
 				tx_index++;
 			}
 
+			status = *HLM_status;
+
+			if (((tx_index * 4) < tx_pkt_len) && (!(status & HLM_TX0_FIFO_FULL)))
+			{
+				*tx0_txFifo = tx_data_ptr[tx_index];
+				tx_index++;
+			}
+
 			if ((rx_start) && (status & HLM_RX1_VALID))
 			{
 				rx_data_ptr[rx_index] = *rx1_rxFifo;
@@ -130,6 +138,8 @@ uint32_t HLM_poll(uint32_t mode)
 				if (rx_pkt_len <= (rx_index * 4))
 				{
 					rx_start = 0;
+					rx_index = 0;
+					break;
 				}
 			}
 
@@ -139,15 +149,6 @@ uint32_t HLM_poll(uint32_t mode)
 				rx_start = 1;
 				rx_index = 0;
 			}
-
-			#if 0
-			if (isr_flag[CDR_INT_RX1_FIFO_ENQ])
-			{
-				isr_flag[CDR_INT_RX1_FIFO_ENQ] = 0;
-				MST_RX_BUF[rx_index] = *rx1_rxFifo;
-				rx_index++;
-			}
-			#endif
 		}
 	}
 	else if (mode == WORKMODE_SLAVE)
@@ -158,6 +159,12 @@ uint32_t HLM_poll(uint32_t mode)
 		uint32_t rx_start = 0;
 		uint32_t status;
 		
+		*rx0_rxTxPair = 1;
+		*rx0_rxTimerAim = 0; //240;
+		*rx1_rxTxPair = 0;
+		*rx1_rxTimerAim = 0;
+		*plic_enable_0_31 = 0;
+		
 
 		while (1)
 		{
@@ -180,13 +187,20 @@ uint32_t HLM_poll(uint32_t mode)
 					rx_start = 0;
 				}
 			}
-
+			else
+			{
+				if (status & HLM_RX0_VALID)
+					rx_start = 1;
+			}
+#if 0
 			//rx0 下行
 			if (isr_flag[CDR_INT_RX0START])
 			{
 				isr_flag[CDR_INT_RX0START] = 0;
 				rx_start = 1;
+				
 			}
+#endif
 		}
 	}
 	else
diff --git a/tb/verilator/sim_main.cpp b/tb/verilator/sim_main.cpp
index 55999c9..4af8d9f 100644
--- a/tb/verilator/sim_main.cpp
+++ b/tb/verilator/sim_main.cpp
@@ -140,7 +140,7 @@ int main(int argc, char **argv, char **env) {
 #endif
 
 		if ( flag_limitEnable ) {
-			if ( main_cycle > 30000 ){
+			if ( main_cycle > 45000 ){
 				std::cout << "Timeout!!!!!" << std::endl;	
 				sim_exit();
 				return -1;